'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')
// const chalk = require('chalk')
const CompressionWebpackPlugin = require('compression-webpack-plugin')
const productionGzipExtensions = ['js', 'css']
const UglifyPlugin = require('uglifyjs-webpack-plugin')
function resolve(dir) {
	return path.join(__dirname, dir)
}

const name = defaultSettings.title // page title

// console proxyPath
// const consoleProxy = (req, res, proxyOptions) => {
// 	console.log(`|- target -|  ${proxyOptions.target}${req.url}`)
// }
// All configuration item explanations can be find in https://cli.vuejs.org/config/
const port = process.env.port || process.env.npm_config_port || 9999 // dev port
const IS_PROD = ['production', 'prod'].includes(process.env.NODE_ENV)

module.exports = {
	publicPath: '/',
	outputDir: 'dist',
	assetsDir: 'static',
	lintOnSave: process.env.NODE_ENV === 'development',
	productionSourceMap: !IS_PROD,
	devServer: {
		port,
		open: false,
		overlay: {
			warnings: false,
			errors: true
		},
		proxy: {
			'/dx-merchant-manager': {
				target: 'http://172.31.24.84:8015/dx-merchant-manager', // 要跨域的域名
				changeOrigin: true, // 是否开启跨域
				pathRewrite: {
					'^/api': ''
				}
			},
			'/Bapi': {
				target: 'https://dxmerchant-dev.ak12.cc/dx-merchant-gateway/', // 要跨域的域名
				changeOrigin: true, // 是否开启跨域
				pathRewrite: {
					'^/Bapi': ''
				}
			}
		}
	},
	configureWebpack: (config) => {
		// it can be accessed in index.html to inject the correct title.
		config.name = name

		config.resolve.alias = {
			'@': resolve('src')
		}
		if (process.env.NODE_ENV === 'production') {
			config.optimization.minimizer[0].options.terserOptions.compress.drop_console = false
			config.plugins.push(
				new CompressionWebpackPlugin({
					filename: '[path].gz[query]',
					algorithm: 'gzip',
					test: new RegExp(
						'\\.(' + productionGzipExtensions.join('|') + ')$'
					),
					threshold: 10240,
					minRatio: 0.8
				})
			)
			// 将每个依赖包打包成单独的js文件
			const optimization = {
				minimizer: [
					new UglifyPlugin({
						uglifyOptions: {
							warnings: false,
							compress: {
								drop_console: true,
								drop_debugger: false,
								pure_funcs: ['console.log']
							}
						}
					})
				]
			}
			Object.assign(config, {
				optimization
			})
		} else {
			config.devtool = 'source-map'
		}
	},
	chainWebpack: (config) => {
		// config.plugin(true).use(HardSourceWebpackPlugin)
		config.cache(true)
		config.plugins.delete('preload') // TODO: need test
		config.plugins.delete('prefetch') // TODO: need test
		// set svg-sprite-loader
		config.module
			.rule('svg')
			.exclude.add(resolve('src/icons'))
			.end()
		config.module
			.rule('icons')
			.test(/\.svg$/)
			.include.add(resolve('src/icons'))
			.end()
			.use('svg-sprite-loader')
			.loader('svg-sprite-loader')
			.options({
				symbolId: 'icon-[name]'
			})
			.end()

		// set preserveWhitespace
		config.module
			.rule('vue')
			.use('vue-loader')
			.loader('vue-loader')
			.tap((options) => {
				options.compilerOptions.preserveWhitespace = true
				return options
			})
			.end()

		// config
		// 	// https://webpack.js.org/configuration/devtool/#development
		// 	.when(process.env.NODE_ENV === 'development', (config) =>
		// 		config.devtool('cheap-source-map')
		// 	)

		config.when(process.env.NODE_ENV !== 'development', (config) => {
			config
				.plugin('ScriptExtHtmlWebpackPlugin')
				.after('html')
				.use('script-ext-html-webpack-plugin', [
					{
						// `runtime` must same as runtimeChunk name. default is `runtime`
						inline: /runtime\..*\.js$/
					}
				])
				.end()
			config.optimization.splitChunks({
				chunks: 'all',
				cacheGroups: {
					libs: {
						name: 'chunk-libs',
						test: /[\\/]node_modules[\\/]/,
						priority: 10,
						chunks: 'initial' // only package third parties that are initially dependent
					},
					elementUI: {
						name: 'chunk-elementUI', // split elementUI into a single package
						priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
						test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
					},
					commons: {
						name: 'chunk-commons',
						test: resolve('src/components'), // can customize your rules
						minChunks: 3, //  minimum common number
						priority: 5,
						reuseExistingChunk: true
					}
				}
			})
			config.optimization.runtimeChunk('single')
		})
	}
}
